<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>ajax</title>
    <style>
        #app{
            width: 200px;
            height: 180px;
        }
        img{
            width: 100%;
        }
    </style>
</head>
<body>
    <div id='app'></div>
    <script src="./Promise.js"> 
    </script>
</body>
</html>